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1 <br /> ENVIRONMENTAL AUDIT, INC. <br /> 1000-A ORTEGA WAY • PLACENTIA, CA 92870-7162 <br /> 7141632-8521 FAX: 714/632-6754 <br />' July 6, 2000 <br /> Project No 1232 <br /> 1 <br /> Michael lnturna <br />' San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Avenue, Third Floor <br />' Stockton, CA 95202 <br /> SUBJECT: SOIL AND GROUND WATER REMEDIATION SYSTEM REPORT <br /> SECOND QUARTER 2000 <br /> Montgomery Ward Auto Service Center <br /> 5400 Pacific Avenue, Stockton, CA <br /> ' Site Code 2163 <br /> S.IVAPCD Permit Unit N-4147-1-0 <br /> r <br />' Dear Mr Infurna <br /> This report describes the activities performed at the above-referenced site during the Second <br />' Quarter 2000 to mitigate soil and ground water impacted by petroleum hydrocarbons <br /> 10 SYSTEM OPERATION AND MONITORING <br /> This report covers the remediation system operating period of March 28, 2000 through June 15, <br /> 2000 The unit was shut-down on several occasions during periods of heavy rain due to pulling <br /> ground water into the vapor extraction header, and was operating on an on/off basis for the last <br /> month due to low concentrations of volatile organic compounds (VOCs) During the reporting <br /> period, the system operated for 1,036 hours The system was monitored on a weekly basis <br /> The field report forms indicating parameters recorded are presented in Attachment B <br /> No VOCs readings from individual wells were taken during the reporting period Soil vapor <br /> samples from the vacuum blower discharge and the stack were obtained on Tune 6, 2000, at the <br /> same time that quarterly ground water monitoring was conducted The samples were analyzed <br /> for TPH, BTEX, MTBE, and carbon dioxide The analytical results are presented in Table 1 <br /> and Attachment A contains copies of the chain of custody records and laboratory reports The <br /> PLANNING,ENVIRONMENTAL ANALYSES AND <br /> HAZARDOUS SUBSTANCES MANAGEMENT AND REMEDIATION <br />